Transmitter-support



W. Tl BOOTH. TRANSMITTER SUPPORT. APPLICATION' man FEB. 2s. 191s.

Patented Dec. 21

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UNITED STATES PATENT OFFICE.

WILLIAM T. BOOT-I, OF EAST ORANGE, NE'W JERSEY, ASSIGNOR T0 WESTERN ELEC- TRIO COMPANY, INCORPORATED, OF NEW' YORK, N. Y., A CORPORATION 0F NEW YORK.

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TRANSMITTER-SUPPORT.

atented Dec. 21, 19,20.

Application filed February 28, 1918. Serial No. 219,666.

To @ZZ eli/om it may concern Be it known that I, `WILLIAM T. BoorH, a citizen of the United States, residing at East Orange, in the county of Essex and vState of New Jersey, have invented certain new and useful Improvementsin V'IransmittenSupports, of which the following` is a full, clear, concise, and exact description.

lThis invention relates in general to a transmitter support, and more particularly to a breast plate for use with such a support.

In various places there is a demand for telephone apparatus that can be supported from the body of the user in such a way as to be instantly available for eflicient operation with the least possible amount of effort upon the part'of the user and yet be so located as not to in any way interfere with the other duties of the user or obscure his line of vision. Particularly is there a demand for apparatus of this type on aeroplanes for communication between the pilot and observer or for wireless communication to other stations.

It is therefore the object of this invention to provide a transmitter breast plate particularly suitable for use on aeroplanes or like places, and to attain this object a feature of the invention consists in providing a transmitter support in which the transmitter is secured to the breast plate by means of an adjustable bracket which, in addition to providing adjustment in a vertical plane7 is also arranged to permity the transmitter being rotated in a plane parallel to that of the breast plate. ,This construction allows the transmitter, when not in use, to be rotated to one side where it will not interfere with the users other duties.

The various features vof this invention may more readily be understood by referring to the accompanying drawing in which Figure 1 is a front view of a transmitter breast plate embodying thisinvention; Fig.` 2 is a fragmentary View showing more clearly the details of the swivel mounting bracket; and Fig. 3 is a sectional view along the line 3 3 of Fig. 1. l

Referring now to the drawings, there is disclosed a triangular breast plate 5 similar to the breast plate commonly used by switchboard operators and preferably made of aluminum. and having its edges bent over in order to provide a plate of the necessary rigidity and at the same time one which is as light as possible. ,At the upper corners of this plate projections are provided to engage the snaps 6*@ of a strap 7- which is adapted to pass over the shoulders and around the neck of the user in the manner well known. Rigidly secured to the center of the breast plate 5 is the bow-shaped member 8 having the extending arms 9 9, which are bent forward and are provided with projections adapted to engage the snaps 10-10, only one of which is shown, of strap 11 which is of a suitable length to pass around the chest of the user. The transmitter 12 is secured by means of screws 13-13 to the cup-shapedmember 14;, which in turn is threaded on the tubular transmitter arm 15. At the lower end of arm 15 is secured the lug 16 which fits within the bracket 17 and is held in any given position by means of the threaded lug 18 and the thumb nut 19. The bracket 17 is riveted or otherwise rigidly fastened to a disk or plate 20, which in turn is secured to the bow-shaped member 8 by means of a shouldered stud 29 in such a manner as to permit the rotation of plate 20 relative to the breast plate. Plate 20 is provided with a recessed portion 21 which, together with the stop pin 22 secured in the breast plate, limits the amount of rotation of plate 20 in either direction. A fiat spring 23 is rigidly secured to the member 8 and its free end has a formed portion 24 adapted to cooperate with a projecting lip 25 on plate 20 to hold the transmitter in place when the arm 15 is in a vertical plane which is the position suitable for talking. When not in use, the transmitter is placed to one side where it is held in position by its own weight and the action of the plate 20 against the stop pin 22. The lower portion of the plate 5 is provided with a ring 26 to which is attached the stay cord 27, the conductors 28 passing on up through the hollow arm 15 into the cup-shaped member 14 where they are attached to the transmitter terminals.

With this arrangement as described the aviator or user can very easily and accurately place the transmitter in the position for most efficient transmission where it is held without further effort on his part. When not in use the transmitter is rotated where it does not in any Way hamper his movements or interfere With his line of vision.

What is claimed is:

1. In a transmitter support, a breast plate, a transmitter arm having a transmitter attached thereto, a lug secured to one end of said transmitter arm, a bracket adapted to coperate with said lug to pro vide adjustment of the transmitter in one plane, and means for securing said bracket to said breast plate to permit the rotation of said transmitter in a plane perpendicular to said first plane. Y

2. In a transmitter support, a breast plate, a transmitter arm having a transmitter attached thereto, a mounting bracket, pivotally attached to said arm, and a plate member rigidly secured to said bracket and adjustably attached to said breast plate whereby the transmitter may be rotated in a plane parallel to that of the breast plate.

3. In a transmitter support, a breast plate, a transmitter arm having a transmitter attached thereto, a mounting bracket, adjustable means for mounting said transmitter arm to said bracket, a plate member 'rigidly secured to said bracket and rotaly attached to said breast plate to permit rotation in a plane parallel to that of the breast plate, means for limiting the amount of rotation of said bracket, and additional means for holding said bracketi'in a certain position.

4. In a transmitter support, a breast plate, a transmitter' arm having a transmitter attached thereto, a mounting bracket, adjustable means for mounting said transmitter arm to said bracket, shouldered stud rigidly secured to Vsaid breast plate and coperating With said plate member to permit rotation of the transmitter, a stop pin rigidly secured to the breast plate and cooperating With a recess portion in said plate member to limit the amount of rotation of said plate member, and spring means mount,- ed on said breast plate coperatinglwith an extension of said bracket to hold it in a given position. Y

5. In a transmitter support, a breast plate, a transmitter arm having a transmitter attached thereto, a mounting bracket, adjustable means for mounting said transmitter arm to said bracket, a shoulder stud secured in said breast plate and adapted to support said bracket and permit its rotation in a plane parallel to that of said breast plate.

In Witness whereof, I hereunto subscribe my name this 15th day of February A. D., 1918. i

WILLIAM T. BOOTH. 

